When you drag android ViewPager to the left and right, do not display yellow or blue gradient images,

When you drag android ViewPager to the left and right, do not display yellow or blue gradient images,

Directly run the Code:

<span style="font-size:18px;">package com.example.viewpagertest;import java.lang.reflect.Field;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.support.v4.widget.EdgeEffectCompat;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;public class MainActivity extends Activity implements OnPageChangeListener {private ViewPager viewpager;private List<ImageView> views;private EdgeEffectCompat leftEdge;private EdgeEffectCompat rightEdge;private int[] ids = {R.drawable.iframe_4,R.drawable.iframe_5,R.drawable.iframe_6,R.drawable.iframe_7,R.drawable.iframe_8};private MyAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {viewpager = (ViewPager) findViewById(R.id.viewpager);initViewPager();initData();}private void initData() {views = new ArrayList<ImageView>();for(int i=0;i<ids.length;i++){ImageView iv = new ImageView(this);iv.setImageResource(ids[i]);views.add(iv);}adapter = new MyAdapter();viewpager.setAdapter(adapter);viewpager.setOnPageChangeListener(this);}class MyAdapter extends PagerAdapter{@Overridepublic int getCount() {return views.size();}@Overridepublic boolean isViewFromObject(View arg0, Object arg1) {return arg0==arg1;}@Overridepublic void destroyItem(ViewGroup container, int position, Object object) {((ViewPager)container).removeView(views.get(position));}@Overridepublic Object instantiateItem(ViewGroup container, int position) {((ViewPager)container).addView(views.get(position));return views.get(position);}}@Overridepublic void onPageScrollStateChanged(int arg0) {}@Overridepublic void onPageScrolled(int arg0, float arg1, int arg2) {if (leftEdge != null && rightEdge != null) {leftEdge.finish();rightEdge.finish();leftEdge.setSize(0, 0);rightEdge.setSize(0, 0);}}@Overridepublic void onPageSelected(int arg0) {}private void initViewPager() {try {Field leftEdgeField = viewpager.getClass().getDeclaredField("mLeftEdge");Field rightEdgeField = viewpager.getClass().getDeclaredField("mRightEdge");if (leftEdgeField != null && rightEdgeField != null) {leftEdgeField.setAccessible(true);rightEdgeField.setAccessible(true);leftEdge = (EdgeEffectCompat) leftEdgeField.get(viewpager);rightEdge = (EdgeEffectCompat) rightEdgeField.get(viewpager);}} catch (Exception e) {e.printStackTrace();}}}</span>